Crawl Space Drying >> How To Pump Water From A Crawl Space

If a hazardous situation exists, correct, it if possible, under program guidelines before beginning weatherization. Hazardous situations include, but are not limited to, unsafe electrical situations, excessive moisture, sewage leaks, excessive animal droppings, or How To Pump Water From A Crawl Space dangerous physical situations, such as broken glass in the crawl space. 

Correct moisture or sewage problems, if possible under program guidelines.  How To Pump Water From A Crawl Space Repair damaged or missing areas of foundations, when allowable under program guidelines. Penetrations to the outside should be sealed. CRAWL SPACE 302-5.2 

If the inspector has called for the separation of the crawl space and basement, separate the vented, non-conditioned crawl space from the unintentionally conditioned or conditioned basement with suitable materials. How To Pump Water From A Crawl Space Install a vapor barrier in the crawl space if none is present. Overlap edges a minimum of 6 inches and up at least 6 inches on the perimeter wall. 

Seal all joints. If floor insulation is to be installed, and there is a danger of freezing, insulate the water lines. How To Pump Water From A Crawl Space Crawl space ventilation is not necessary if the crawl space is well drained and dry, there is a complete, effective vapor barrier, and there is no danger of standing water. 

Otherwise, install the required amount of closeable foundation ventilation (1ft2 of closeable NFVA for each 1500ft2 of floor area) when insulating the crawl space. How To Pump Water From A Crawl Space Seal all direct air leakage sites into the crawl space. 

Seal all bypasses and chaseways into and through the conditioned areas of the house to achieve a house to zone leakage of 20 square inches or less (see 1506-3 Zone Pressure Testing). How To Pump Water From A Crawl Space Route any exhaust fans to the outside, using dampered vents and smooth bore rigid pipe and an appropriate termination fixture. 

Install insulation, when required, with the vapor barrier toward the living area. Cut floor insulation to fit snugly into the cavities and secure with mechanical fasteners. How To Pump Water From A Crawl Space Install perimeter insulation  from the sillbox (including the band joist) to the crawl space floor. 

The crawl space wall insulation shall extend vertically and horizontally a minimum total distance of 24" linearly from the outside finished ground level. How To Pump Water From A Crawl Space Mechanically fasten the insulation and seal all joints with tape. BASEMENT 302-5.3 Correct basement floor moisture problems as directed by the work order. 

If floor insulation is to be installed, and there is a danger of freezing, insulate the water lines. Seal all penetrations and other direct air leakage sites into the basement. How To Pump Water From A Crawl Space Seal all bypasses and chaseways into and through the conditioned areas of the house to achieve a 50Pa pressure difference into the non-conditioned area (see 1506-3). 

Route any exhaust fans to the outside using dampered vents, smooth-bore rigid pipe, and an appropriate termination fixture. Repair or replace exterior doors or door components to reduce air leakage. How To Pump Water From A Crawl Space Replace all missing glass and  repair or replace window components to reduce air leakage. Install insulation, when required, with the vapor barrier toward the living area. 

Cut floor insulation to fit snugly into the cavities, and secure with mechanical fasteners. Install perimeter insulation from the sillbox to the basement floor. How To Pump Water From A Crawl Space Mechanically fasten the insulation and seal all joints with tape. Insulate the band joist of conditioned or unintentionally conditioned basements. 

NOTE: do not insulate basement walls that are below the ground surface level with any product where you cannot ensure an air barrier, as the flow of moisture behind the insulation may tend to encourage mold growth. How To Pump Water From A Crawl Space We learn that all wall components require a surface exposure to drying potential, either to inside or outside. 

Basement wall surfaces below grade level need to have the opportunity to "dry to the inside". CERTIFICATE OF INSULATION 302-5.4. How To Pump Water From A Crawl Space Post a consumer information card or certificate of insulation which complies with OAC 109:4-3-14 on, or adjacent to, the electric service panel. 

Aside from structural concerns, the most important consideration for foundation design is moisture. No client wants a wet basement. No client wants a damp basement. How To Pump Water From A Crawl Space No client wants mold in their basement. The best way to ensure that a foundation stays dry most of the time is to include: 

Proper  drainage Capillary breaks You can't go back to add these later (for a reasonable cost) so the time to do it is when you build the foundation (see Figure 6.1). How To Pump Water From A Crawl Space This applies to full foundations, to crawlspaces, and to slab-on-grade construction. Even with these precautions, the foundation walls may still be damp at times. 

You can’t guarantee that mold won't grow. You can minimize the potential for conditions that foster mold growth, and maximize the potential for walls to dry when they do get wet. How To Pump Water From A Crawl Space Although the code calls for a vapor retarder on the interior (warm in winter) side of insulated foundation walls, a vapor retarder is not recommended on either side of the wall, to facilitate drying. 

The figures in this chapter show several possibilities for relatively forgiving, mold-resistant, insulated basement wall assemblies. How To Pump Water From A Crawl Space If the proper drainage and capillary breaks are not present, it is better not to build a conditioned basement so that the foundation walls do not need insulating. Insulate the foundation walls on the inside or the outside of the wall. 

The required R-value depends on the results of your compliance analysis. Insulation must extend from the top of the wall to a depth below grade that is determined by climate (ECCCNYS 502.2.1.6,502.2.3.6, 602.1.5). How To Pump Water From A Crawl Space See table below for specific requirements. ECCCNYS Table 502.2.1.6 

Foundation Insulation Depth Heating Degree Days* Depth Below Grade See page 31 for more information about Heating Degree Days. How To Pump Water From A Crawl Space Insulate the band joist of the floor framing above the basement. Seal air leaks in the foundation walls and slab floor, as well as the sill / band joist area. 

If the foundation is insulated with rigid foam on the exterior, the insulation must be protected with a rigid, opaque and weather-resistant barrier that extends at least 6" below grade (ECCCNYS 102.4.1). How To Pump Water From A Crawl Space Important note: When you are doing compliance analysis on a conditioned basement, you must look at each basement wall separately and determine, wall by wall.

Whether the wall is more than 50% above grade or more than 50% below grade. Walls that are 50% or more above grade, must be added in with above grade walls in your calculations, and insulated to the same R-value. How To Pump Water From A Crawl Space Walls that are more than 50% below grade are treated as "basement walls." Unconditioned Basements

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